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In order to overcome the shortcomings of slow convergence speed and easy falling into the local minimum values of the BP neural network, an improved particle swarm optimization(PSO) algorithm is… (More)
Air pollution and corrosion monitoring at regular, fixed and quantitative levels are achieved has an irreplaceable role in disaster prevention decision making, climate assessment, atmospheric… (More)
The industrial robot with six degrees of freedom belongs to active mechanical device, it is a complex automatic control system with redundancy, multi variables and essential nonlinearity, the inverse… (More)
Objective: To explore the association between exposure to ambient air pollution during pregnancy and congenital heart disease so as to provide evidence for primary prevention of congenital heart… (More)